[ijaz]

How do we detect dark energy?? How, if at all, do we locate dark matter??

[evan_au]

Dark Matter and Dark Energy are quite different (apart from the use of the word "Dark", and that their effects are only apparent over astronomical distances).

How do we detect dark energy??

The existence of Dark Energy was deduced from studying the velocity of distant galaxies.
It was noted that the expansion of the universe is speeding up, which was something unforseen in Einstein's General Theory of Relativity.

How, if at all, do we locate dark matter??

The density of dark matter within a galaxy can be estimated from galaxy rotation curves.
The density of dark matter within a galaxy cluster can be estimated from the motion of the galaxies within the cluster.
The density of the dark matter halo around a galaxy or galaxy cluster can be estimated by gravitational lensing.

What is dark matter/ dark energy??

Those same references will point you at some current theories about what they are.

[liquidspacetime]

Dark matter is now understood to fill what would otherwise be considered to be empty space.

'Cosmologists at Penn Weigh Cosmic Filaments and Voids'
http://www.upenn.edu/pennnews/news/cosmologists-penn-weigh-cosmic-filaments-and-voids

"Dark matter ... permeates all the way to the center of the voids."

'No Empty Space in the Universe --Dark Matter Discovered to Fill Intergalactic Space'
http://www.dailygalaxy.com/my_weblog/2012/02/no-empty-space-in-the-universe-dark-matter-discovered-to-fill-intergalactic-space-.html

"A long standing mystery on where the missing dark matter is has been solved by the research. There is no empty space in the universe. The intergalactic space is filled with dark matter."

Dark matter which fills the space unoccupied by particles of matter is displaced by the particles of matter which exist in it and move through it.

What is referred to as frame dragging in the following video is the state of displacement of the dark matter. Watch the video starting at the 0:30 mark to see a visual representation of the state of displacement of the dark matter.

(video doesn't always apper. The video is: youtubecom/watch?v=s9ITt44-EHE)

http://www.nasa.gov/mission_pages/gpb/gpb_results.html

"Imagine the Earth as if it were immersed in honey. As the planet rotates, the honey around it would swirl, and it's the same with space and time," said Francis Everitt

Honey has mass and so does dark matter. The swirl is the state of displacement of the dark matter.

'The Milky Way's dark matter halo appears to be lopsided'
http://arxiv.org/abs/0903.3802

"the emerging picture of the dark matter halo of the Milky Way is dominantly lopsided in nature."

The Milky Way's halo is lopsided due to the matter in the Milky Way moving through and displacing the dark matter, analogous to a submarine moving through and displacing the water.

The Milky Way's halo is the state of displacement of the dark matter.

The Milky Way's halo is curved spacetime.

What is referred to geometrically as the curvature of spacetime physically exists in nature as the state of displacement of the dark matter.

The state of displacement of the dark matter is gravity.

Our Universe is a larger version of a galactic polar jet.

Our Universe is a larger version of one of the following.


​​​From: Black Hole Active Galaxies and Quasars


​​From: Page on nrao.edu

Matter is moving outward and away from us in three dimensional space.

Dark energy is dark matter continuously emitted into the Universal jet.

It's not the Big Bang, it's the Big Ongoing.

[Damon Harrison]

We speak of gravity as being a force that attracts a body of mass toward the center of an object with a mass greater than itself. If dark energy makes up 73% of the total energy and mass of the universe, then I propose that the larger body of mass is not attracting the smaller. Instead, it is the displacement of dark matter that causes the smaller object to be pushed toward the center of the object of greater size. Imagine submerging yourself in the great depths of the ocean. Similar to the water pressure, dark matter applies pressure to all sides of an object. The greater the size of the object, the greater the amount of water, or dark matter, that is displaced. Therefore the pressure applied to any object is equal to the size of the object's displacement. Imagine a basketball sitting on a piece of paper. The curve or displacement of the paper increases as it comes in contact with the ball. This is what we call gravity. The curve would  be smaller using a golf ball. This explains why it has never been observed  a larger object  being attracted toward the center of an object smaller than itself. .

[Space Flow]

There of course is no such thing as "Dark Matter"
The observed Gravitational effects are well explained by Spacetime Flow theory.
The theory of moving Spacetime. https://www.facebook.com/permalink.php?story_fbid=999378540105442&id=595088680534432

And well displayed in this video by Matt Faw; https://vimeo.com/147667252

[alysdexia]

liquidspacetime is the same crackpot on Quora under multiple names who got banned.

There are other threads on this but in short, dark matter is neutral motes like neutrinos fusede at the Planck scale by gravity and dark vis is the repulsive gravity of negative matter where the big bang is a diametric drive.